Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bea548bc661e850932f06f5098e21df2b175943c1392d5f716afc7959e83917' 
  AND token = 'IzexxB1lf8IX/J73h7o74gZxa8GaAvJCzIAZO7sU0Bw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}